Invaders from Mars (1986)

Their conquest has already begun. . . . He knows they’re here.

Overview

full movie, with english subtitles online, download for free, streaming, watch online. Invaders from Mars (1986)
In this attempted remake of the classic 50s SF tale, a boy tries to stop an invasion of his town by aliens who take over the the minds of his parents, his least-liked schoolteacher and other townspeople. With the aid of the school nurse the boy enlists the aid of the U.S. Marines.